Lamp reflector



NOV. 13, 1934. 1 BROslLOW r AL' 1,980,183

LAMP REFLECTOR Filed Jan. 25, 1933 Patented Nov. 13, 1934 LAMP REFLECTORLouis Brosilow and Louis Severus, Chicagmrlll. Application January 23,1933, Serial No. 652,998 f 7 Claims.

This invention relates to improvements in that type of electric lampgenerally characterized in the trade as a reflector lamp, having for anobject to provide a combination direct and indirect I reflector lamp,the light reiiecting means of which is so constructed that a singlelight source may be optionally caused to provide either indirect orcombined indirect and direct illumination.

It isalso an equally important object of the in- 10 vention to provide anovel form of reflector, which in one stage of adjustment will functionas a means for producing indirect illumination; that is, the reflectionof light rays into a zone above the light source for re-reilection froma receiving surface, and hence, afford flood-like lighting of a givenarea, and which, in another stage of adjustment, will produce combinedindirect and direct illumination, causing a portion of the lumensemitted by the light source to be upwardly directed for indirect floorlighting and another portion of such lumens to be coursed outwardly anddownwardly from said light source into those Zones immediately adjacentand below the same for direct illumination.

Another object of the invention is to provide a reflector for lamps ofthe character indicated, said reflector being equipped with a simple andpractical form of light ray controlling means, enabling a user of thedevice to so regulate it that the light rays from the supplied sourceWithin the reflector may be directly projected therefrom in a manner tobring about an even and uniform degree of direct illumination and at thesame time, to evenly and uniformly illuminate a shade disposed about thereflector; the light rays directly projected outwardly from thereflector, a portion of which are received upon said shade, beingcapable of being modulated, hence, permitting of a graduatableluminosity of said shadeand enabling a user to attain dilierent degreesof lighting effects thereupon.

Yet another and equally important object of the invention may be statedto reside in providing the reflector with means whereby the rays emittedfrom a light source equipped therewith can be outletted to producedirect illumination Without in any way disturbingfthe normal positioningof the reector and/or the shade with which the reflector is provided.

Other objects of the invention will be in part obvious and in partpointed out hereinafter.

In order that the invention and its mode of operation may be readilyunderstood by those skilled in the art to which it appertains, we have Vin the accompanying drawing and in the detailed description basedthereupon, set out one embodiment of our invention.

In the drawing :r

Figure l is an elevation of a reflector type of lamp equipped with ourinvention, a portion of QC; which is shown in section;

Figure 2 is a side elevation of the improved reflector, drawn upon areduced scale,vshowing the light outletting ways or windows of thereflector in their open positions; i 6,5?

Figure -3 is a horizontal section taken on the line 3-3 of Figure 1,looking in the direction in which the arrows point;

Figure 4 is a similar View, but wherein the light outletting ways orwindows are shown in their open positions, and

Figure 5 is -a transverse section taken on the line 5-5 of Figure 1,looking in the direction in Which-the arrows point. l

Having more particular reference to the drawing, in connection withwhich like characters of reference will designate corresponding partsthroughout, we have shown for purposes of illustration our invention asbeing adapted toa-socalled reflector lamp, wherein the lamp standard isdesignated by the numeral 1, said standard being provided with a fitting2' from which the usual candle lamp bracketl supporting arms 3 extendand receive thereupon candle lamps 4, as Well as the usual ornamentalfixtures 5. The fitting 2 is also provided with an upright tubularextension 6 supporting a cup-like device 7 upon its upper end, thedevice 7, in turn, being formed with an annular shoulder 8 adjacent itsopen upper end and being internally screw-threaded, for a purpose whichwill be presently apparent.

It is, of course, to be understood that the usual electrical wiring isprovided the standard 1 extending through the fitting 2 into and throughthe brackets 3 for electrical connection lwith the candle lamps 4; also,that a portion' of this wiring is extended through the tubular extension6 into electrical contact with the terminals of a suitable electric lampreceiving socket or fitting 9, fixedly received within the cup-likedevice 7. Suitable circuit closing devices, not shown, are provided thecandle lamps and the lamp receiving socket 9.

A substantially bowl-shaped reector l0 is provided the construction,being made of suitable light reflecting material. The normally lowerportion of this reflector 10 is formed or provided with a reducedtubular extension or throat 11, the lower end of which is preferablyshouldered, as at 12 and screw-threaded in order that the vwill bejuxtaposed with respect to a material portion of an incandescentelectric lamp 14 received Within the reflector 10 and engaged in theaforesaid socket 9. It is preferable that'this lamp 14 shall be of awattage or candle power considerably greater than that of the candlelamps 4. Furthermore, the lower portion of the reflector throat 11 isformed with an elongated and transversely disposed slot 15, whoseutility will be hereinafter more fully described, while the open upperside of the reflector is suitably finished, as by rolling or otherwisetreating it, as lindicated at 16; being also formed with an annularshoulder 17 whereby to permit of the snug and supporting engagement ofan annular bracket 18therein. The bracket 18 in turn', is connected byradially disposed sup- Y. porting arms 19 to the upper portion of adesirable type of lamp shade, designated in its entirety by the numeral20, hence, permitting said lamp shade to be advantageously supportedfrom the reflector 10 and about it, as well as the'candle lamps 4. c

` Snugly and rotatably received'within vthe reduced portion or throat 11of the reflector'l() is a tubular sleeve 21. It is to be noted, in thisconnection, that the sleeeve 21, which is constructed of suitablevmaterial, such for example, as that from which the reflector 10 isconstructed, is of a size and shape corresponding to that portion of thereflector 10 and throat 11 receiving it; also, that this sleeve islongitudinally split as indicated at 22, in order thattheinherent'spring of the material from which it is constructed willcausethe same to snugly and rmlyl engage, throughout its outer surface, withthe adjacent inner 'sides of the reflector 10 and throat 11. Inotherwords, the sleeve 2 is mounted within the reector 10 and the throat 11yso as to have a snug and somewhat frictional contact with the adjacentportions thereof, particularly, to avoid vibratory movement as betweenthe said two elements. The upper portion of the sleeve is formed with aplurality of light outlet ways or windows, generally indicated bythenumeral'23.`v These windows correspond in shape,'size and disposition,to the Windows13. formed in the reflector 10 and by consequence,'withrotation of the sleeve 21 to a predeterminedposition, the Windowstherein will be movedinto complete registrationwith the windowsl-B, asis' shown in the Figures 2 and 4.' By rotating the sleeve 21 in acounter direction its Windows 23 will be disaligned or brought out of lregistration with the windows 13, thus, closing the latter andpreventing the outletting of light rays. With a view toward providingthe sleeve 21 with means for facilitating rotation or turning thereofwithin the reector, a bolt 24 is passed through the slot 15 into fixedengagement with an adjacent portion of said sleeve 21, as indicated at25. The outer end of the bolt 24 is formed with an enlarged andscrew-threaded head 26 so that when the bolt is passed through a knob orlinger piece 27, as is shown in the'Figure 1, said screwthreaded head 26will 'engage with 'the internal for direct illumination.

screw-threads formed upon an adjacent portion of said knob, hence,effecting an adjustable mounting of the latter upon and with relation tosaid bolt 24. Thus, by turning the knob 27 in one direction, the innerend of the same will be caused to have binding engagement with anadjacent portion of the reflector throat 11, thus, locking the sleeve 21against adjustment, whereas with rotation of the knob 27 in a reversedirection, the inner end thereof will be disengaged from said portion ofthe reflector throat 11 and Will permit of free turning of the sleeve 21with the exertion of the proper lateral thrust or pressure upon the knob27. At this point, it is to be understood that the slot 15 is of such alength that when the bolt 24 is adjacent one end thereof, the Windows 23in the sleeve 21 will be completely disaligned with respect to thereflector windows 13 and when said bolt 24 has 4been moved through theslot 15 to its opposite end, said windows 23 in the sleeve 21 will be infull registrationl with the reflector windows 13. It is to befurthermore understood that the sleeve 21 may beso rotated or turnedthrough the knob'27, as to eifect but a partial registration of itswindows 23 with the reflector windows 13, hence, permitting of theregulating of ythe intensity of `the light emitted from thereflector 10positively locked in any one of its adjusted positions by means of thescrew-threaded mounting of the knob 27 upon the head portion 26 of thebolt 24, as aforesaid. Y

In usage of our improved reflector, and referring to the hereinpresented embodiment thereof, when the same is to be used for producingonly indirect illumination, the sleeve 21 is turned or moved. to aposition whereat the windows 23 thereof will be completely disalignedwith respect to the reflector windows 13, hence closing the latter andthereby causing the entire output of lumens from the lamp 14 to beupwardly reflected. Whenit is desired that the reflector shall producecombined indirect and direct illumination, the sleeve 21 is rotated tothe limits of its y opposite position, whereat the windows 23 Willcompletely register or align with the reflector windows 13. When in sucha position, it willbe seen that a portion of the lumens produced by thelamp 14 will be directed outwardly from the reflector through saidwindows 13, thus produci ing direct illumination. The residual portionof the light rays from the lamp 14 will be projected upwardly from theopen end of the reilector 10 to produce indirect nood-like illumination.The in- I tensity of the light rays by-passed or projected from thereflector through the windows 13 may be modulated to the desired nicety,such as conditions or preference may dictate,-by so rotating the sleeve21 as to increaseror decrease the -size '.of the windows 13 due to themovement of the windows 23 of the sleeve with respect thereto.

At times, when ther improved device is used to produce combined indirectand direct illumination, it will be understood that the candle lamps 4shown inthe present embodiment, need not be energized. The light rayspassing through the reilector windows 13 will be found to amply serve tobring the shade 20 to the desired degree of luminosity. Furthermore, itwill be seen that the degree of luminosity of the shade 20 under suchoperating conditions may be either increased or decreased, by rotationof the sleeve 21 and that itc The sleeve 21 may be itis of the Windows23 of the sleeve 21 therewith, the candle lamps 4 may be then energizedto provide illumination for the shade 20.

While we have herein shown the invention as being adapted to a shadeequipped lamp, it is, of course, to be understood that the same may beas advantageously adapted for different types of illuminating devices,as for example, torchres with or without candle lamps, wall fixtures andvarious other devices too numerous to mention.

Manifestly, the construction shown is capable of considerablemodification, and such modification as is within the sco-pe of ourclaims, we consider within the spirit of our invention.

We claim:

1. A reflector of the character described having a plurality of windowstherein, an expansible sleeve nested within said reflector and formedwith a plurality of openings corresponding to the reflector windows, andmeans engaged with a portion of said sleeve and disposed exteriorly ofthe reflector for facilitating rotation of the sleeve in a manner toeffect alignment or disalignment of said openings with said windows.

2. A reflector of the character described, comprising a bowl-like bodyhaving a reducedthroat upon its normally lower side, the intermediateportion of the reflector having a plurality of relatively spaced windowsformed thereabout, a sleeve snugly received within the reflector andextending into said throat and rotatable with respect thereto, saidsleeve having a plurality of openings thereabout corresponding to saidwindows, and means engaged with a portion of the sleeve and extendedwithout the reflector for facilitating adjusting movement of the former.

3. A reflector of the character described, comprising a bowl-like bodyand a reduced throat extending from the lower side thereof, saidreflector having a plurality of windows formed therein adjacent thelower portion of the bowl and the upper portion of the throat, andshutter means movably mounted upon the reflector in proximity to saidwindows, operable in a manner to optionally close or partially close thesame.

4. A reector of the character described, comprising a bowl-like bodyportion, and a reduced throat co-axially extending from the lower sidethereof, said reector having a plurality of windows formed in anddisposed about the same adjacent the lower portion of the bowl and theupper portion of the throat, and an expansible sleeve snugly androtatably received within the reflector adjacent the lower portion ofthe bowl and the upper portion of the throat, said sleeve having aplurality of openings therein corresponding to the windows in thereflector, whereby with rotation, said windows may be opened or closed.

5. A reector of the character described, comprising a bowl-like bodyportion and a reduced throat extending from the lower side thereof, saidreector having a plurality of windows formed therein adjacent the lowerportion of the bowl and the upper portion of the throat, an expansiblesleeve snugly and rotatably received within the reector adjacent thelower portion of its bowl-like body and its throat, said sleeve having aplurality of openings therein corresponding to the windows in thereflector, and means engaging the lower end of said sleeve through anadjacent portion of the throat of said reflector, operable from withoutthe reflector for imparting rotary motion to said sleeve and forpreventing movement of the sleeve longitudinally with respect to thereflector.

6. A lamp, comprising in combination, a standard, a reflectorA supportedupon the standard, a light source within the reflector, said reflectorconsisting of a bowl-like body and a reduced throat co-axially extendingfrom the lower portion of the bowl-like body, said reflector having aplurality of light outletting ways formed therein, the light outlettingways being of sizes relatively smaller than the size of said lightsource, an expansible sleeve snugly and movably mounted within thereiiector adjacent the lower side of its body and said throat, saidsleeve having a plurality of openings therein corresponding to thewindows in the reflector, and means connected to a portion of saidsleeve through an adjacent part of the reflector throat to facilitateimparting of movement to the sleeve and to prevent displacement of thesleeve with respect to the reflector.

7. A reector of the character described, having light outletting meansin the sides thereof, an expansible sleeve nested within said reectorformed with light outletting means corresponding to the light outlettingmeans in said reflector, and means connected to a portion of said sleeveengageable from a point exteriorly of the reflector for facilitatingmovement of the sleeve whereby to effect alignment or disalignment ofthe outletting means in the sleeve with the light outletting means inthe reflector.

LOUIS BROSILOW. LOUIS SEVERUS.

